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https://github.com/mozilla/gecko-dev.git
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0836abe85d
This makes it conform to our convention that getters returning pointers that can never be null do not begin with "Get". nsStyleContext's rule node is never null because we require a rule node in order to construct a style context.
1901 lines
62 KiB
C++
1901 lines
62 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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* the container for the style sheets that apply to a presentation, and
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* the internal API that the style system exposes for creating (and
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* potentially re-creating) style contexts
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*/
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#include "mozilla/Util.h"
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#include "nsStyleSet.h"
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#include "nsNetUtil.h"
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#include "nsCSSStyleSheet.h"
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#include "nsIDocumentInlines.h"
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#include "nsRuleWalker.h"
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#include "nsStyleContext.h"
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#include "mozilla/css/StyleRule.h"
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#include "nsCSSAnonBoxes.h"
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#include "nsCSSPseudoElements.h"
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#include "nsCSSRuleProcessor.h"
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#include "nsDataHashtable.h"
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#include "nsIContent.h"
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#include "nsRuleData.h"
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#include "nsRuleProcessorData.h"
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#include "nsTransitionManager.h"
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#include "nsAnimationManager.h"
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#include "nsEventStates.h"
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#include "nsStyleSheetService.h"
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#include "mozilla/dom/Element.h"
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#include "sampler.h"
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using namespace mozilla;
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using namespace mozilla::dom;
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NS_IMPL_ISUPPORTS1(nsEmptyStyleRule, nsIStyleRule)
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/* virtual */ void
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nsEmptyStyleRule::MapRuleInfoInto(nsRuleData* aRuleData)
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{
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}
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#ifdef DEBUG
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/* virtual */ void
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nsEmptyStyleRule::List(FILE* out, int32_t aIndent) const
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{
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for (int32_t index = aIndent; --index >= 0; ) fputs(" ", out);
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fputs("[empty style rule] {}\n", out);
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}
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#endif
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NS_IMPL_ISUPPORTS1(nsInitialStyleRule, nsIStyleRule)
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/* virtual */ void
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nsInitialStyleRule::MapRuleInfoInto(nsRuleData* aRuleData)
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{
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// Iterate over the property groups
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for (nsStyleStructID sid = nsStyleStructID(0);
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sid < nsStyleStructID_Length; sid = nsStyleStructID(sid + 1)) {
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if (aRuleData->mSIDs & (1 << sid)) {
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// Iterate over nsCSSValues within the property group
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nsCSSValue * const value_start =
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aRuleData->mValueStorage + aRuleData->mValueOffsets[sid];
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for (nsCSSValue *value = value_start,
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*value_end = value + nsCSSProps::PropertyCountInStruct(sid);
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value != value_end; ++value) {
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// If MathML is disabled take care not to set MathML properties (or we
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// will trigger assertions in nsRuleNode)
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if (sid == eStyleStruct_Font &&
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!aRuleData->mPresContext->Document()->GetMathMLEnabled()) {
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size_t index = value - value_start;
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if (index == nsCSSProps::PropertyIndexInStruct(
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eCSSProperty_script_level) ||
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index == nsCSSProps::PropertyIndexInStruct(
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eCSSProperty_script_size_multiplier) ||
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index == nsCSSProps::PropertyIndexInStruct(
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eCSSProperty_script_min_size)) {
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continue;
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}
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}
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if (value->GetUnit() == eCSSUnit_Null) {
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value->SetInitialValue();
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}
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}
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}
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}
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}
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#ifdef DEBUG
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/* virtual */ void
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nsInitialStyleRule::List(FILE* out, int32_t aIndent) const
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{
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for (int32_t index = aIndent; --index >= 0; ) fputs(" ", out);
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fputs("[initial style rule] {}\n", out);
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}
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#endif
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static const nsStyleSet::sheetType gCSSSheetTypes[] = {
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nsStyleSet::eAgentSheet,
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nsStyleSet::eUserSheet,
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nsStyleSet::eDocSheet,
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nsStyleSet::eScopedDocSheet,
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nsStyleSet::eOverrideSheet
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};
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nsStyleSet::nsStyleSet()
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: mRuleTree(nullptr),
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mBatching(0),
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mInShutdown(false),
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mAuthorStyleDisabled(false),
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mInReconstruct(false),
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mDirty(0),
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mUnusedRuleNodeCount(0)
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{
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}
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size_t
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nsStyleSet::SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf) const
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{
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size_t n = aMallocSizeOf(this);
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for (int i = 0; i < eSheetTypeCount; i++) {
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if (mRuleProcessors[i]) {
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n += mRuleProcessors[i]->SizeOfIncludingThis(aMallocSizeOf);
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}
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n += mSheets[i].SizeOfExcludingThis(nullptr, aMallocSizeOf);
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}
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for (uint32_t i = 0; i < mScopedDocSheetRuleProcessors.Length(); i++) {
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n += mScopedDocSheetRuleProcessors[i]->SizeOfIncludingThis(aMallocSizeOf);
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}
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n += mScopedDocSheetRuleProcessors.SizeOfExcludingThis(aMallocSizeOf);
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n += mRoots.SizeOfExcludingThis(aMallocSizeOf);
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n += mOldRuleTrees.SizeOfExcludingThis(aMallocSizeOf);
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return n;
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}
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nsresult
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nsStyleSet::Init(nsPresContext *aPresContext)
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{
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mFirstLineRule = new nsEmptyStyleRule;
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mFirstLetterRule = new nsEmptyStyleRule;
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mPlaceholderRule = new nsEmptyStyleRule;
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mRuleTree = nsRuleNode::CreateRootNode(aPresContext);
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GatherRuleProcessors(eAnimationSheet);
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GatherRuleProcessors(eTransitionSheet);
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return NS_OK;
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}
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nsresult
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nsStyleSet::BeginReconstruct()
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{
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NS_ASSERTION(!mInReconstruct, "Unmatched begin/end?");
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NS_ASSERTION(mRuleTree, "Reconstructing before first construction?");
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// Create a new rule tree root
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nsRuleNode* newTree =
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nsRuleNode::CreateRootNode(mRuleTree->GetPresContext());
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if (!newTree)
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return NS_ERROR_OUT_OF_MEMORY;
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// Save the old rule tree so we can destroy it later
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if (!mOldRuleTrees.AppendElement(mRuleTree)) {
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newTree->Destroy();
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return NS_ERROR_OUT_OF_MEMORY;
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}
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// We need to keep mRoots so that the rule tree GC will only free the
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// rule trees that really aren't referenced anymore (which should be
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// all of them, if there are no bugs in reresolution code).
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mInReconstruct = true;
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mRuleTree = newTree;
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return NS_OK;
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}
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void
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nsStyleSet::EndReconstruct()
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{
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NS_ASSERTION(mInReconstruct, "Unmatched begin/end?");
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mInReconstruct = false;
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#ifdef DEBUG
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for (int32_t i = mRoots.Length() - 1; i >= 0; --i) {
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nsRuleNode *n = mRoots[i]->RuleNode();
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while (n->GetParent()) {
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n = n->GetParent();
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}
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// Since nsStyleContext's mParent and mRuleNode are immutable, and
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// style contexts own their parents, and nsStyleContext asserts in
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// its constructor that the style context and its parent are in the
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// same rule tree, we don't need to check any of the children of
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// mRoots; we only need to check the rule nodes of mRoots
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// themselves.
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NS_ASSERTION(n == mRuleTree, "style context has old rule node");
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}
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#endif
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// This *should* destroy the only element of mOldRuleTrees, but in
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// case of some bugs (which would trigger the above assertions), it
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// won't.
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GCRuleTrees();
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}
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void
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nsStyleSet::SetQuirkStyleSheet(nsIStyleSheet* aQuirkStyleSheet)
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{
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NS_ASSERTION(aQuirkStyleSheet, "Must have quirk sheet if this is called");
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NS_ASSERTION(!mQuirkStyleSheet, "Multiple calls to SetQuirkStyleSheet?");
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NS_ASSERTION(mSheets[eAgentSheet].IndexOf(aQuirkStyleSheet) != -1,
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"Quirk style sheet not one of our agent sheets?");
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mQuirkStyleSheet = aQuirkStyleSheet;
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}
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typedef nsDataHashtable<nsPtrHashKey<nsINode>, uint32_t> ScopeDepthCache;
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// Returns the depth of a style scope element, with 1 being the depth of
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// a style scope element that has no ancestor style scope elements. The
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// depth does not count intervening non-scope elements.
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static uint32_t
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GetScopeDepth(nsINode* aScopeElement, ScopeDepthCache& aCache)
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{
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nsINode* parent = aScopeElement->GetParent();
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if (!parent || !parent->IsElementInStyleScope()) {
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return 1;
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}
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uint32_t depth = aCache.Get(aScopeElement);
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if (!depth) {
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for (nsINode* n = parent; n; n = n->GetParent()) {
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if (n->IsScopedStyleRoot()) {
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depth = GetScopeDepth(n, aCache) + 1;
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aCache.Put(aScopeElement, depth);
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break;
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}
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}
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}
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return depth;
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}
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struct ScopedSheetOrder
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{
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nsCSSStyleSheet* mSheet;
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uint32_t mDepth;
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uint32_t mOrder;
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bool operator==(const ScopedSheetOrder& aRHS) const
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{
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return mDepth == aRHS.mDepth &&
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mOrder == aRHS.mOrder;
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}
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bool operator<(const ScopedSheetOrder& aRHS) const
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{
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if (mDepth != aRHS.mDepth) {
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return mDepth < aRHS.mDepth;
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}
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return mOrder < aRHS.mOrder;
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}
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};
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// Sorts aSheets such that style sheets for ancestor scopes come
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// before those for descendant scopes, and with sheets for a single
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// scope in document order.
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static void
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SortStyleSheetsByScope(nsTArray<nsCSSStyleSheet*>& aSheets)
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{
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uint32_t n = aSheets.Length();
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if (n == 1) {
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return;
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}
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ScopeDepthCache cache;
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cache.Init();
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nsTArray<ScopedSheetOrder> sheets;
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sheets.SetLength(n);
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// For each sheet, record the depth of its scope element and its original
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// document order.
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for (uint32_t i = 0; i < n; i++) {
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sheets[i].mSheet = aSheets[i];
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sheets[i].mDepth = GetScopeDepth(aSheets[i]->GetScopeElement(), cache);
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sheets[i].mOrder = i;
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}
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// Sort by depth first, then document order.
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sheets.Sort();
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for (uint32_t i = 0; i < n; i++) {
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aSheets[i] = sheets[i].mSheet;
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}
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}
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nsresult
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nsStyleSet::GatherRuleProcessors(sheetType aType)
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{
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mRuleProcessors[aType] = nullptr;
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if (aType == eScopedDocSheet) {
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for (uint32_t i = 0; i < mScopedDocSheetRuleProcessors.Length(); i++) {
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nsIStyleRuleProcessor* processor = mScopedDocSheetRuleProcessors[i].get();
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Element* scope =
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static_cast<nsCSSRuleProcessor*>(processor)->GetScopeElement();
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scope->ClearIsScopedStyleRoot();
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}
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mScopedDocSheetRuleProcessors.Clear();
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}
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if (mAuthorStyleDisabled && (aType == eDocSheet ||
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aType == eScopedDocSheet ||
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aType == ePresHintSheet ||
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aType == eStyleAttrSheet)) {
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//don't regather if this level is disabled
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return NS_OK;
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}
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if (aType == eAnimationSheet) {
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// We have no sheet for the animations level; just a rule
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// processor. (XXX: We should probably do this for the other
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// non-CSS levels too!)
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mRuleProcessors[aType] = PresContext()->AnimationManager();
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return NS_OK;
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}
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if (aType == eTransitionSheet) {
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// We have no sheet for the transitions level; just a rule
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// processor. (XXX: We should probably do this for the other
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// non-CSS levels too!)
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mRuleProcessors[aType] = PresContext()->TransitionManager();
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return NS_OK;
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}
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if (aType == eScopedDocSheet) {
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// Create a rule processor for each scope.
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uint32_t count = mSheets[eScopedDocSheet].Count();
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if (count) {
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// Gather the scoped style sheets into an array as
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// nsCSSStyleSheets, and mark all of their scope elements
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// as scoped style roots.
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nsTArray<nsCSSStyleSheet*> sheets(count);
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for (uint32_t i = 0; i < count; i++) {
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nsRefPtr<nsCSSStyleSheet> sheet =
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do_QueryObject(mSheets[eScopedDocSheet].ObjectAt(i));
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sheets.AppendElement(sheet);
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Element* scope = sheet->GetScopeElement();
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scope->SetIsScopedStyleRoot();
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}
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// Sort the scoped style sheets so that those for the same scope are
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// adjacent and that ancestor scopes come before descendent scopes.
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SortStyleSheetsByScope(sheets);
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uint32_t start = 0, end;
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do {
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// Find the range of style sheets with the same scope.
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Element* scope = sheets[start]->GetScopeElement();
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end = start + 1;
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while (end < count && sheets[end]->GetScopeElement() == scope) {
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end++;
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}
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scope->SetIsScopedStyleRoot();
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// Create a rule processor for the scope.
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nsTArray< nsRefPtr<nsCSSStyleSheet> > sheetsForScope;
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sheetsForScope.AppendElements(sheets.Elements() + start, end - start);
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mScopedDocSheetRuleProcessors.AppendElement
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(new nsCSSRuleProcessor(sheetsForScope, uint8_t(aType), scope));
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start = end;
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} while (start < count);
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}
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return NS_OK;
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}
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if (mSheets[aType].Count()) {
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switch (aType) {
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case eAgentSheet:
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case eUserSheet:
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case eDocSheet:
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case eOverrideSheet: {
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// levels containing CSS stylesheets (apart from eScopedDocSheet)
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nsCOMArray<nsIStyleSheet>& sheets = mSheets[aType];
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nsTArray<nsRefPtr<nsCSSStyleSheet> > cssSheets(sheets.Count());
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for (int32_t i = 0, i_end = sheets.Count(); i < i_end; ++i) {
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nsRefPtr<nsCSSStyleSheet> cssSheet = do_QueryObject(sheets[i]);
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NS_ASSERTION(cssSheet, "not a CSS sheet");
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cssSheets.AppendElement(cssSheet);
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}
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mRuleProcessors[aType] =
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new nsCSSRuleProcessor(cssSheets, uint8_t(aType), nullptr);
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} break;
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default:
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// levels containing non-CSS stylesheets
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NS_ASSERTION(mSheets[aType].Count() == 1, "only one sheet per level");
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mRuleProcessors[aType] = do_QueryInterface(mSheets[aType][0]);
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break;
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}
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}
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return NS_OK;
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}
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static bool
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IsScopedStyleSheet(nsIStyleSheet* aSheet)
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{
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nsRefPtr<nsCSSStyleSheet> cssSheet = do_QueryObject(aSheet);
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NS_ASSERTION(cssSheet, "expected aSheet to be an nsCSSStyleSheet");
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return cssSheet->GetScopeElement();
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}
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nsresult
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nsStyleSet::AppendStyleSheet(sheetType aType, nsIStyleSheet *aSheet)
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{
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NS_PRECONDITION(aSheet, "null arg");
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NS_ASSERTION(aSheet->IsApplicable(),
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"Inapplicable sheet being placed in style set");
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mSheets[aType].RemoveObject(aSheet);
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if (!mSheets[aType].AppendObject(aSheet))
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return NS_ERROR_OUT_OF_MEMORY;
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if (!mBatching)
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return GatherRuleProcessors(aType);
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mDirty |= 1 << aType;
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return NS_OK;
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}
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nsresult
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nsStyleSet::PrependStyleSheet(sheetType aType, nsIStyleSheet *aSheet)
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{
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NS_PRECONDITION(aSheet, "null arg");
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NS_ASSERTION(aSheet->IsApplicable(),
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"Inapplicable sheet being placed in style set");
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mSheets[aType].RemoveObject(aSheet);
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if (!mSheets[aType].InsertObjectAt(aSheet, 0))
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return NS_ERROR_OUT_OF_MEMORY;
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if (!mBatching)
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return GatherRuleProcessors(aType);
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mDirty |= 1 << aType;
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return NS_OK;
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}
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nsresult
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nsStyleSet::RemoveStyleSheet(sheetType aType, nsIStyleSheet *aSheet)
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{
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NS_PRECONDITION(aSheet, "null arg");
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NS_ASSERTION(aSheet->IsComplete(),
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"Incomplete sheet being removed from style set");
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mSheets[aType].RemoveObject(aSheet);
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if (!mBatching)
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return GatherRuleProcessors(aType);
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mDirty |= 1 << aType;
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return NS_OK;
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}
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nsresult
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nsStyleSet::ReplaceSheets(sheetType aType,
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const nsCOMArray<nsIStyleSheet> &aNewSheets)
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{
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mSheets[aType].Clear();
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if (!mSheets[aType].AppendObjects(aNewSheets))
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return NS_ERROR_OUT_OF_MEMORY;
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if (!mBatching)
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return GatherRuleProcessors(aType);
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mDirty |= 1 << aType;
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return NS_OK;
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}
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nsresult
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nsStyleSet::InsertStyleSheetBefore(sheetType aType, nsIStyleSheet *aNewSheet,
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nsIStyleSheet *aReferenceSheet)
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{
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NS_PRECONDITION(aNewSheet && aReferenceSheet, "null arg");
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NS_ASSERTION(aNewSheet->IsApplicable(),
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"Inapplicable sheet being placed in style set");
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mSheets[aType].RemoveObject(aNewSheet);
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int32_t idx = mSheets[aType].IndexOf(aReferenceSheet);
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if (idx < 0)
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return NS_ERROR_INVALID_ARG;
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if (!mSheets[aType].InsertObjectAt(aNewSheet, idx))
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return NS_ERROR_OUT_OF_MEMORY;
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if (!mBatching)
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return GatherRuleProcessors(aType);
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mDirty |= 1 << aType;
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return NS_OK;
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}
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bool
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nsStyleSet::GetAuthorStyleDisabled()
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{
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return mAuthorStyleDisabled;
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}
|
|
|
|
nsresult
|
|
nsStyleSet::SetAuthorStyleDisabled(bool aStyleDisabled)
|
|
{
|
|
if (aStyleDisabled == !mAuthorStyleDisabled) {
|
|
mAuthorStyleDisabled = aStyleDisabled;
|
|
BeginUpdate();
|
|
mDirty |= 1 << eDocSheet |
|
|
1 << ePresHintSheet |
|
|
1 << eStyleAttrSheet;
|
|
return EndUpdate();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// -------- Doc Sheets
|
|
|
|
nsresult
|
|
nsStyleSet::AddDocStyleSheet(nsIStyleSheet* aSheet, nsIDocument* aDocument)
|
|
{
|
|
NS_PRECONDITION(aSheet && aDocument, "null arg");
|
|
NS_ASSERTION(aSheet->IsApplicable(),
|
|
"Inapplicable sheet being placed in style set");
|
|
|
|
sheetType type = IsScopedStyleSheet(aSheet) ?
|
|
eScopedDocSheet :
|
|
eDocSheet;
|
|
nsCOMArray<nsIStyleSheet>& sheets = mSheets[type];
|
|
|
|
sheets.RemoveObject(aSheet);
|
|
nsStyleSheetService *sheetService = nsStyleSheetService::GetInstance();
|
|
|
|
// lowest index first
|
|
int32_t newDocIndex = aDocument->GetIndexOfStyleSheet(aSheet);
|
|
|
|
int32_t count = sheets.Count();
|
|
int32_t index;
|
|
for (index = 0; index < count; index++) {
|
|
nsIStyleSheet* sheet = sheets.ObjectAt(index);
|
|
int32_t sheetDocIndex = aDocument->GetIndexOfStyleSheet(sheet);
|
|
if (sheetDocIndex > newDocIndex)
|
|
break;
|
|
|
|
// If the sheet is not owned by the document it can be an author
|
|
// sheet registered at nsStyleSheetService or an additional author
|
|
// sheet on the document, which means the new
|
|
// doc sheet should end up before it.
|
|
if (sheetDocIndex < 0 &&
|
|
((sheetService &&
|
|
sheetService->AuthorStyleSheets()->IndexOf(sheet) >= 0) ||
|
|
sheet == aDocument->FirstAdditionalAuthorSheet()))
|
|
break;
|
|
}
|
|
if (!sheets.InsertObjectAt(aSheet, index))
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
if (!mBatching)
|
|
return GatherRuleProcessors(type);
|
|
|
|
mDirty |= 1 << type;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
nsStyleSet::RemoveDocStyleSheet(nsIStyleSheet *aSheet)
|
|
{
|
|
nsRefPtr<nsCSSStyleSheet> cssSheet = do_QueryObject(aSheet);
|
|
bool isScoped = cssSheet && cssSheet->GetScopeElement();
|
|
return RemoveStyleSheet(isScoped ? eScopedDocSheet : eDocSheet, aSheet);
|
|
}
|
|
|
|
// Batching
|
|
void
|
|
nsStyleSet::BeginUpdate()
|
|
{
|
|
++mBatching;
|
|
}
|
|
|
|
nsresult
|
|
nsStyleSet::EndUpdate()
|
|
{
|
|
NS_ASSERTION(mBatching > 0, "Unbalanced EndUpdate");
|
|
if (--mBatching) {
|
|
// We're not completely done yet.
|
|
return NS_OK;
|
|
}
|
|
|
|
for (int i = 0; i < eSheetTypeCount; ++i) {
|
|
if (mDirty & (1 << i)) {
|
|
nsresult rv = GatherRuleProcessors(sheetType(i));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
}
|
|
|
|
mDirty = 0;
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
nsStyleSet::EnableQuirkStyleSheet(bool aEnable)
|
|
{
|
|
#ifdef DEBUG
|
|
bool oldEnabled;
|
|
{
|
|
nsCOMPtr<nsIDOMCSSStyleSheet> domSheet =
|
|
do_QueryInterface(mQuirkStyleSheet);
|
|
domSheet->GetDisabled(&oldEnabled);
|
|
oldEnabled = !oldEnabled;
|
|
}
|
|
#endif
|
|
mQuirkStyleSheet->SetEnabled(aEnable);
|
|
#ifdef DEBUG
|
|
// This should always be OK, since SetEnabled should call
|
|
// ClearRuleCascades.
|
|
// Note that we can hit this codepath multiple times when document.open()
|
|
// (potentially implied) happens multiple times.
|
|
if (mRuleProcessors[eAgentSheet] && aEnable != oldEnabled) {
|
|
static_cast<nsCSSRuleProcessor*>(static_cast<nsIStyleRuleProcessor*>(
|
|
mRuleProcessors[eAgentSheet]))->AssertQuirksChangeOK();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
template<class T>
|
|
static bool
|
|
EnumRulesMatching(nsIStyleRuleProcessor* aProcessor, void* aData)
|
|
{
|
|
T* data = static_cast<T*>(aData);
|
|
aProcessor->RulesMatching(data);
|
|
return true;
|
|
}
|
|
|
|
static inline bool
|
|
IsMoreSpecificThanAnimation(nsRuleNode *aRuleNode)
|
|
{
|
|
return !aRuleNode->IsRoot() &&
|
|
(aRuleNode->GetLevel() == nsStyleSet::eTransitionSheet ||
|
|
aRuleNode->IsImportantRule());
|
|
}
|
|
|
|
static nsIStyleRule*
|
|
GetAnimationRule(nsRuleNode *aRuleNode)
|
|
{
|
|
nsRuleNode *n = aRuleNode;
|
|
while (IsMoreSpecificThanAnimation(n)) {
|
|
n = n->GetParent();
|
|
}
|
|
|
|
if (n->IsRoot() || n->GetLevel() != nsStyleSet::eAnimationSheet) {
|
|
return nullptr;
|
|
}
|
|
|
|
return n->GetRule();
|
|
}
|
|
|
|
static nsRuleNode*
|
|
ReplaceAnimationRule(nsRuleNode *aOldRuleNode,
|
|
nsIStyleRule *aOldAnimRule,
|
|
nsIStyleRule *aNewAnimRule)
|
|
{
|
|
nsTArray<nsRuleNode*> moreSpecificNodes;
|
|
|
|
nsRuleNode *n = aOldRuleNode;
|
|
while (IsMoreSpecificThanAnimation(n)) {
|
|
moreSpecificNodes.AppendElement(n);
|
|
n = n->GetParent();
|
|
}
|
|
|
|
if (aOldAnimRule) {
|
|
NS_ABORT_IF_FALSE(n->GetRule() == aOldAnimRule, "wrong rule");
|
|
NS_ABORT_IF_FALSE(n->GetLevel() == nsStyleSet::eAnimationSheet,
|
|
"wrong level");
|
|
n = n->GetParent();
|
|
}
|
|
|
|
NS_ABORT_IF_FALSE(!IsMoreSpecificThanAnimation(n) &&
|
|
(n->IsRoot() ||
|
|
n->GetLevel() != nsStyleSet::eAnimationSheet),
|
|
"wrong level");
|
|
|
|
if (aNewAnimRule) {
|
|
n = n->Transition(aNewAnimRule, nsStyleSet::eAnimationSheet, false);
|
|
}
|
|
|
|
for (uint32_t i = moreSpecificNodes.Length(); i-- != 0; ) {
|
|
nsRuleNode *oldNode = moreSpecificNodes[i];
|
|
n = n->Transition(oldNode->GetRule(), oldNode->GetLevel(),
|
|
oldNode->IsImportantRule());
|
|
}
|
|
|
|
return n;
|
|
}
|
|
|
|
/**
|
|
* |GetContext| implements sharing of style contexts (not just the data
|
|
* on the rule nodes) between siblings and cousins of the same
|
|
* generation. (It works for cousins of the same generation since
|
|
* |aParentContext| could itself be a shared context.)
|
|
*/
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::GetContext(nsStyleContext* aParentContext,
|
|
nsRuleNode* aRuleNode,
|
|
// aVisitedRuleNode may be null; if it is null
|
|
// it means that we don't need to force creation
|
|
// of a StyleIfVisited. (But if we make one
|
|
// because aParentContext has one, then aRuleNode
|
|
// should be used.)
|
|
nsRuleNode* aVisitedRuleNode,
|
|
nsIAtom* aPseudoTag,
|
|
nsCSSPseudoElements::Type aPseudoType,
|
|
Element* aElementForAnimation,
|
|
uint32_t aFlags)
|
|
{
|
|
NS_PRECONDITION((!aPseudoTag &&
|
|
aPseudoType ==
|
|
nsCSSPseudoElements::ePseudo_NotPseudoElement) ||
|
|
(aPseudoTag &&
|
|
nsCSSPseudoElements::GetPseudoType(aPseudoTag) ==
|
|
aPseudoType),
|
|
"Pseudo mismatch");
|
|
|
|
if (aVisitedRuleNode == aRuleNode) {
|
|
// No need to force creation of a visited style in this case.
|
|
aVisitedRuleNode = nullptr;
|
|
}
|
|
|
|
// Ensure |aVisitedRuleNode != nullptr| corresponds to the need to
|
|
// create an if-visited style context, and that in that case, we have
|
|
// parentIfVisited set correctly.
|
|
nsStyleContext *parentIfVisited =
|
|
aParentContext ? aParentContext->GetStyleIfVisited() : nullptr;
|
|
if (parentIfVisited) {
|
|
if (!aVisitedRuleNode) {
|
|
aVisitedRuleNode = aRuleNode;
|
|
}
|
|
} else {
|
|
if (aVisitedRuleNode) {
|
|
parentIfVisited = aParentContext;
|
|
}
|
|
}
|
|
|
|
if (aFlags & eIsLink) {
|
|
// If this node is a link, we want its visited's style context's
|
|
// parent to be the regular style context of its parent, because
|
|
// only the visitedness of the relevant link should influence style.
|
|
parentIfVisited = aParentContext;
|
|
}
|
|
|
|
nsRefPtr<nsStyleContext> result;
|
|
if (aParentContext)
|
|
result = aParentContext->FindChildWithRules(aPseudoTag, aRuleNode,
|
|
aVisitedRuleNode,
|
|
aFlags & eIsVisitedLink);
|
|
|
|
#ifdef NOISY_DEBUG
|
|
if (result)
|
|
fprintf(stdout, "--- SharedSC %d ---\n", ++gSharedCount);
|
|
else
|
|
fprintf(stdout, "+++ NewSC %d +++\n", ++gNewCount);
|
|
#endif
|
|
|
|
if (!result) {
|
|
result = NS_NewStyleContext(aParentContext, aPseudoTag, aPseudoType,
|
|
aRuleNode);
|
|
if (!result)
|
|
return nullptr;
|
|
if (aVisitedRuleNode) {
|
|
nsRefPtr<nsStyleContext> resultIfVisited =
|
|
NS_NewStyleContext(parentIfVisited, aPseudoTag, aPseudoType,
|
|
aVisitedRuleNode);
|
|
if (!resultIfVisited) {
|
|
return nullptr;
|
|
}
|
|
if (!parentIfVisited) {
|
|
mRoots.AppendElement(resultIfVisited);
|
|
}
|
|
resultIfVisited->SetIsStyleIfVisited();
|
|
result->SetStyleIfVisited(resultIfVisited.forget());
|
|
|
|
bool relevantLinkVisited = (aFlags & eIsLink) ?
|
|
(aFlags & eIsVisitedLink) :
|
|
(aParentContext && aParentContext->RelevantLinkVisited());
|
|
|
|
if (relevantLinkVisited) {
|
|
result->AddStyleBit(NS_STYLE_RELEVANT_LINK_VISITED);
|
|
}
|
|
}
|
|
if (!aParentContext) {
|
|
mRoots.AppendElement(result);
|
|
}
|
|
}
|
|
else {
|
|
NS_ASSERTION(result->GetPseudoType() == aPseudoType, "Unexpected type");
|
|
NS_ASSERTION(result->GetPseudo() == aPseudoTag, "Unexpected pseudo");
|
|
}
|
|
|
|
if (aFlags & eDoAnimation) {
|
|
// Normally the animation manager has already added the correct
|
|
// style rule. However, if the animation-name just changed, it
|
|
// might have been wrong. So ask it to double-check based on the
|
|
// resulting style context.
|
|
nsIStyleRule *oldAnimRule = GetAnimationRule(aRuleNode);
|
|
nsIStyleRule *animRule = PresContext()->AnimationManager()->
|
|
CheckAnimationRule(result, aElementForAnimation);
|
|
NS_ABORT_IF_FALSE(result->RuleNode() == aRuleNode,
|
|
"unexpected rule node");
|
|
NS_ABORT_IF_FALSE(!result->GetStyleIfVisited() == !aVisitedRuleNode,
|
|
"unexpected visited rule node");
|
|
NS_ABORT_IF_FALSE(!aVisitedRuleNode ||
|
|
result->GetStyleIfVisited()->RuleNode() ==
|
|
aVisitedRuleNode,
|
|
"unexpected visited rule node");
|
|
if (oldAnimRule != animRule) {
|
|
nsRuleNode *ruleNode =
|
|
ReplaceAnimationRule(aRuleNode, oldAnimRule, animRule);
|
|
nsRuleNode *visitedRuleNode = aVisitedRuleNode
|
|
? ReplaceAnimationRule(aVisitedRuleNode, oldAnimRule, animRule)
|
|
: nullptr;
|
|
result = GetContext(aParentContext, ruleNode, visitedRuleNode,
|
|
aPseudoTag, aPseudoType, nullptr,
|
|
aFlags & ~eDoAnimation);
|
|
}
|
|
}
|
|
|
|
if (aElementForAnimation && aElementForAnimation->IsHTML(nsGkAtoms::body) &&
|
|
aPseudoType == nsCSSPseudoElements::ePseudo_NotPseudoElement &&
|
|
PresContext()->CompatibilityMode() == eCompatibility_NavQuirks) {
|
|
nsIDocument* doc = aElementForAnimation->GetCurrentDoc();
|
|
if (doc && doc->GetBodyElement() == aElementForAnimation) {
|
|
// Update the prescontext's body color
|
|
PresContext()->SetBodyTextColor(result->GetStyleColor()->mColor);
|
|
}
|
|
}
|
|
|
|
return result.forget();
|
|
}
|
|
|
|
void
|
|
nsStyleSet::AddImportantRules(nsRuleNode* aCurrLevelNode,
|
|
nsRuleNode* aLastPrevLevelNode,
|
|
nsRuleWalker* aRuleWalker)
|
|
{
|
|
NS_ASSERTION(aCurrLevelNode &&
|
|
aCurrLevelNode != aLastPrevLevelNode, "How did we get here?");
|
|
|
|
nsAutoTArray<nsIStyleRule*, 16> importantRules;
|
|
for (nsRuleNode *node = aCurrLevelNode; node != aLastPrevLevelNode;
|
|
node = node->GetParent()) {
|
|
// We guarantee that we never walk the root node here, so no need
|
|
// to null-check GetRule(). Furthermore, it must be a CSS rule.
|
|
NS_ASSERTION(nsRefPtr<css::StyleRule>(do_QueryObject(node->GetRule())),
|
|
"Unexpected non-CSS rule");
|
|
|
|
nsIStyleRule* impRule =
|
|
static_cast<css::StyleRule*>(node->GetRule())->GetImportantRule();
|
|
if (impRule)
|
|
importantRules.AppendElement(impRule);
|
|
}
|
|
|
|
NS_ASSERTION(importantRules.Length() != 0,
|
|
"Why did we think there were important rules?");
|
|
|
|
for (uint32_t i = importantRules.Length(); i-- != 0; ) {
|
|
aRuleWalker->Forward(importantRules[i]);
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void
|
|
nsStyleSet::AssertNoImportantRules(nsRuleNode* aCurrLevelNode,
|
|
nsRuleNode* aLastPrevLevelNode)
|
|
{
|
|
if (!aCurrLevelNode)
|
|
return;
|
|
|
|
for (nsRuleNode *node = aCurrLevelNode; node != aLastPrevLevelNode;
|
|
node = node->GetParent()) {
|
|
nsRefPtr<css::StyleRule> rule(do_QueryObject(node->GetRule()));
|
|
NS_ASSERTION(rule, "Unexpected non-CSS rule");
|
|
|
|
NS_ASSERTION(!rule->GetImportantRule(), "Unexpected important rule");
|
|
}
|
|
}
|
|
|
|
void
|
|
nsStyleSet::AssertNoCSSRules(nsRuleNode* aCurrLevelNode,
|
|
nsRuleNode* aLastPrevLevelNode)
|
|
{
|
|
if (!aCurrLevelNode)
|
|
return;
|
|
|
|
for (nsRuleNode *node = aCurrLevelNode; node != aLastPrevLevelNode;
|
|
node = node->GetParent()) {
|
|
nsIStyleRule *rule = node->GetRule();
|
|
nsRefPtr<css::StyleRule> cssRule(do_QueryObject(rule));
|
|
NS_ASSERTION(!cssRule || !cssRule->Selector(), "Unexpected CSS rule");
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Enumerate the rules in a way that cares about the order of the rules.
|
|
void
|
|
nsStyleSet::FileRules(nsIStyleRuleProcessor::EnumFunc aCollectorFunc,
|
|
RuleProcessorData* aData, Element* aElement,
|
|
nsRuleWalker* aRuleWalker)
|
|
{
|
|
SAMPLE_LABEL("nsStyleSet", "FileRules");
|
|
|
|
// Cascading order:
|
|
// [least important]
|
|
// - UA normal rules = Agent normal
|
|
// - User normal rules = User normal
|
|
// - Presentation hints = PresHint normal
|
|
// - Author normal rules = Document normal
|
|
// - Override normal rules = Override normal
|
|
// - animation rules = Animation normal
|
|
// - Author !important rules = Document !important
|
|
// - Override !important rules = Override !important
|
|
// - User !important rules = User !important
|
|
// - UA !important rules = Agent !important
|
|
// - transition rules = Transition normal
|
|
// [most important]
|
|
|
|
// Save off the last rule before we start walking our agent sheets;
|
|
// this will be either the root or one of the restriction rules.
|
|
nsRuleNode* lastRestrictionRN = aRuleWalker->CurrentNode();
|
|
|
|
aRuleWalker->SetLevel(eAgentSheet, false, true);
|
|
if (mRuleProcessors[eAgentSheet])
|
|
(*aCollectorFunc)(mRuleProcessors[eAgentSheet], aData);
|
|
nsRuleNode* lastAgentRN = aRuleWalker->CurrentNode();
|
|
bool haveImportantUARules = !aRuleWalker->GetCheckForImportantRules();
|
|
|
|
aRuleWalker->SetLevel(eUserSheet, false, true);
|
|
bool skipUserStyles =
|
|
aElement && aElement->IsInNativeAnonymousSubtree();
|
|
if (!skipUserStyles && mRuleProcessors[eUserSheet]) // NOTE: different
|
|
(*aCollectorFunc)(mRuleProcessors[eUserSheet], aData);
|
|
nsRuleNode* lastUserRN = aRuleWalker->CurrentNode();
|
|
bool haveImportantUserRules = !aRuleWalker->GetCheckForImportantRules();
|
|
|
|
aRuleWalker->SetLevel(ePresHintSheet, false, false);
|
|
if (mRuleProcessors[ePresHintSheet])
|
|
(*aCollectorFunc)(mRuleProcessors[ePresHintSheet], aData);
|
|
nsRuleNode* lastPresHintRN = aRuleWalker->CurrentNode();
|
|
|
|
aRuleWalker->SetLevel(eDocSheet, false, true);
|
|
bool cutOffInheritance = false;
|
|
if (mBindingManager && aElement) {
|
|
// We can supply additional document-level sheets that should be walked.
|
|
mBindingManager->WalkRules(aCollectorFunc,
|
|
static_cast<ElementDependentRuleProcessorData*>(aData),
|
|
&cutOffInheritance);
|
|
}
|
|
if (!skipUserStyles && !cutOffInheritance && // NOTE: different
|
|
mRuleProcessors[eDocSheet])
|
|
(*aCollectorFunc)(mRuleProcessors[eDocSheet], aData);
|
|
nsRuleNode* lastDocRN = aRuleWalker->CurrentNode();
|
|
bool haveImportantDocRules = !aRuleWalker->GetCheckForImportantRules();
|
|
nsTArray<nsRuleNode*> lastScopedRNs;
|
|
nsTArray<bool> haveImportantScopedRules;
|
|
bool haveAnyImportantScopedRules = false;
|
|
if (!skipUserStyles && !cutOffInheritance &&
|
|
aElement && aElement->IsElementInStyleScope()) {
|
|
lastScopedRNs.SetLength(mScopedDocSheetRuleProcessors.Length());
|
|
haveImportantScopedRules.SetLength(mScopedDocSheetRuleProcessors.Length());
|
|
for (uint32_t i = 0; i < mScopedDocSheetRuleProcessors.Length(); i++) {
|
|
aRuleWalker->SetLevel(eScopedDocSheet, false, true);
|
|
nsCSSRuleProcessor* processor =
|
|
static_cast<nsCSSRuleProcessor*>(mScopedDocSheetRuleProcessors[i].get());
|
|
aData->mScope = processor->GetScopeElement();
|
|
(*aCollectorFunc)(mScopedDocSheetRuleProcessors[i], aData);
|
|
lastScopedRNs[i] = aRuleWalker->CurrentNode();
|
|
haveImportantScopedRules[i] = !aRuleWalker->GetCheckForImportantRules();
|
|
haveAnyImportantScopedRules = haveAnyImportantScopedRules || haveImportantScopedRules[i];
|
|
}
|
|
aData->mScope = nullptr;
|
|
}
|
|
nsRuleNode* lastScopedRN = aRuleWalker->CurrentNode();
|
|
aRuleWalker->SetLevel(eStyleAttrSheet, false, true);
|
|
if (mRuleProcessors[eStyleAttrSheet])
|
|
(*aCollectorFunc)(mRuleProcessors[eStyleAttrSheet], aData);
|
|
nsRuleNode* lastStyleAttrRN = aRuleWalker->CurrentNode();
|
|
bool haveImportantStyleAttrRules = !aRuleWalker->GetCheckForImportantRules();
|
|
|
|
aRuleWalker->SetLevel(eOverrideSheet, false, true);
|
|
if (mRuleProcessors[eOverrideSheet])
|
|
(*aCollectorFunc)(mRuleProcessors[eOverrideSheet], aData);
|
|
nsRuleNode* lastOvrRN = aRuleWalker->CurrentNode();
|
|
bool haveImportantOverrideRules = !aRuleWalker->GetCheckForImportantRules();
|
|
|
|
// This needs to match IsMoreSpecificThanAnimation() above.
|
|
aRuleWalker->SetLevel(eAnimationSheet, false, false);
|
|
(*aCollectorFunc)(mRuleProcessors[eAnimationSheet], aData);
|
|
|
|
if (haveAnyImportantScopedRules) {
|
|
for (uint32_t i = lastScopedRNs.Length(); i-- != 0; ) {
|
|
aRuleWalker->SetLevel(eScopedDocSheet, true, false);
|
|
nsRuleNode* startRN = lastScopedRNs[i];
|
|
nsRuleNode* endRN = i == 0 ? lastDocRN : lastScopedRNs[i - 1];
|
|
if (haveImportantScopedRules[i]) {
|
|
AddImportantRules(startRN, endRN, aRuleWalker); // scoped
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
AssertNoImportantRules(startRN, endRN);
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
AssertNoImportantRules(lastScopedRN, lastDocRN);
|
|
}
|
|
#endif
|
|
|
|
if (haveImportantDocRules) {
|
|
aRuleWalker->SetLevel(eDocSheet, true, false);
|
|
AddImportantRules(lastDocRN, lastPresHintRN, aRuleWalker); // doc
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
AssertNoImportantRules(lastDocRN, lastPresHintRN);
|
|
}
|
|
#endif
|
|
|
|
if (haveImportantStyleAttrRules) {
|
|
aRuleWalker->SetLevel(eStyleAttrSheet, true, false);
|
|
AddImportantRules(lastStyleAttrRN, lastScopedRN, aRuleWalker); // style attr
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
AssertNoImportantRules(lastStyleAttrRN, lastScopedRN);
|
|
}
|
|
#endif
|
|
|
|
if (haveImportantOverrideRules) {
|
|
aRuleWalker->SetLevel(eOverrideSheet, true, false);
|
|
AddImportantRules(lastOvrRN, lastStyleAttrRN, aRuleWalker); // override
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
AssertNoImportantRules(lastOvrRN, lastStyleAttrRN);
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
AssertNoCSSRules(lastPresHintRN, lastUserRN);
|
|
#endif
|
|
|
|
if (haveImportantUserRules) {
|
|
aRuleWalker->SetLevel(eUserSheet, true, false);
|
|
AddImportantRules(lastUserRN, lastAgentRN, aRuleWalker); //user
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
AssertNoImportantRules(lastUserRN, lastAgentRN);
|
|
}
|
|
#endif
|
|
|
|
if (haveImportantUARules) {
|
|
aRuleWalker->SetLevel(eAgentSheet, true, false);
|
|
AddImportantRules(lastAgentRN, lastRestrictionRN, aRuleWalker); //agent
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
AssertNoImportantRules(lastAgentRN, lastRestrictionRN);
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
AssertNoCSSRules(lastRestrictionRN, mRuleTree);
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
nsRuleNode *lastImportantRN = aRuleWalker->CurrentNode();
|
|
#endif
|
|
aRuleWalker->SetLevel(eTransitionSheet, false, false);
|
|
(*aCollectorFunc)(mRuleProcessors[eTransitionSheet], aData);
|
|
#ifdef DEBUG
|
|
AssertNoCSSRules(aRuleWalker->CurrentNode(), lastImportantRN);
|
|
#endif
|
|
|
|
}
|
|
|
|
// Enumerate all the rules in a way that doesn't care about the order
|
|
// of the rules and doesn't walk !important-rules.
|
|
void
|
|
nsStyleSet::WalkRuleProcessors(nsIStyleRuleProcessor::EnumFunc aFunc,
|
|
ElementDependentRuleProcessorData* aData,
|
|
bool aWalkAllXBLStylesheets)
|
|
{
|
|
if (mRuleProcessors[eAgentSheet])
|
|
(*aFunc)(mRuleProcessors[eAgentSheet], aData);
|
|
|
|
bool skipUserStyles = aData->mElement->IsInNativeAnonymousSubtree();
|
|
if (!skipUserStyles && mRuleProcessors[eUserSheet]) // NOTE: different
|
|
(*aFunc)(mRuleProcessors[eUserSheet], aData);
|
|
|
|
if (mRuleProcessors[ePresHintSheet])
|
|
(*aFunc)(mRuleProcessors[ePresHintSheet], aData);
|
|
|
|
bool cutOffInheritance = false;
|
|
if (mBindingManager) {
|
|
// We can supply additional document-level sheets that should be walked.
|
|
if (aWalkAllXBLStylesheets) {
|
|
mBindingManager->WalkAllRules(aFunc, aData);
|
|
} else {
|
|
mBindingManager->WalkRules(aFunc, aData, &cutOffInheritance);
|
|
}
|
|
}
|
|
if (!skipUserStyles && !cutOffInheritance) {
|
|
if (mRuleProcessors[eDocSheet]) // NOTE: different
|
|
(*aFunc)(mRuleProcessors[eDocSheet], aData);
|
|
if (aData->mElement->IsElementInStyleScope()) {
|
|
for (uint32_t i = 0; i < mScopedDocSheetRuleProcessors.Length(); i++)
|
|
(*aFunc)(mScopedDocSheetRuleProcessors[i], aData);
|
|
}
|
|
}
|
|
if (mRuleProcessors[eStyleAttrSheet])
|
|
(*aFunc)(mRuleProcessors[eStyleAttrSheet], aData);
|
|
if (mRuleProcessors[eOverrideSheet])
|
|
(*aFunc)(mRuleProcessors[eOverrideSheet], aData);
|
|
(*aFunc)(mRuleProcessors[eAnimationSheet], aData);
|
|
(*aFunc)(mRuleProcessors[eTransitionSheet], aData);
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ResolveStyleFor(Element* aElement,
|
|
nsStyleContext* aParentContext)
|
|
{
|
|
TreeMatchContext treeContext(true, nsRuleWalker::eRelevantLinkUnvisited,
|
|
aElement->OwnerDoc());
|
|
return ResolveStyleFor(aElement, aParentContext, treeContext);
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ResolveStyleFor(Element* aElement,
|
|
nsStyleContext* aParentContext,
|
|
TreeMatchContext& aTreeMatchContext)
|
|
{
|
|
NS_ENSURE_FALSE(mInShutdown, nullptr);
|
|
NS_ASSERTION(aElement, "aElement must not be null");
|
|
|
|
nsRuleWalker ruleWalker(mRuleTree);
|
|
aTreeMatchContext.ResetForUnvisitedMatching();
|
|
ElementRuleProcessorData data(PresContext(), aElement, &ruleWalker,
|
|
aTreeMatchContext);
|
|
FileRules(EnumRulesMatching<ElementRuleProcessorData>, &data, aElement,
|
|
&ruleWalker);
|
|
|
|
nsRuleNode *ruleNode = ruleWalker.CurrentNode();
|
|
nsRuleNode *visitedRuleNode = nullptr;
|
|
|
|
if (aTreeMatchContext.HaveRelevantLink()) {
|
|
aTreeMatchContext.ResetForVisitedMatching();
|
|
ruleWalker.Reset();
|
|
FileRules(EnumRulesMatching<ElementRuleProcessorData>, &data, aElement,
|
|
&ruleWalker);
|
|
visitedRuleNode = ruleWalker.CurrentNode();
|
|
}
|
|
|
|
uint32_t flags = eDoAnimation;
|
|
if (nsCSSRuleProcessor::IsLink(aElement)) {
|
|
flags |= eIsLink;
|
|
}
|
|
if (nsCSSRuleProcessor::GetContentState(aElement, aTreeMatchContext).
|
|
HasState(NS_EVENT_STATE_VISITED)) {
|
|
flags |= eIsVisitedLink;
|
|
}
|
|
|
|
return GetContext(aParentContext, ruleNode, visitedRuleNode,
|
|
nullptr, nsCSSPseudoElements::ePseudo_NotPseudoElement,
|
|
aElement, flags);
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ResolveStyleForRules(nsStyleContext* aParentContext,
|
|
const nsTArray< nsCOMPtr<nsIStyleRule> > &aRules)
|
|
{
|
|
NS_ENSURE_FALSE(mInShutdown, nullptr);
|
|
|
|
nsRuleWalker ruleWalker(mRuleTree);
|
|
// FIXME: Perhaps this should be passed in, but it probably doesn't
|
|
// matter.
|
|
ruleWalker.SetLevel(eDocSheet, false, false);
|
|
for (uint32_t i = 0; i < aRules.Length(); i++) {
|
|
ruleWalker.ForwardOnPossiblyCSSRule(aRules.ElementAt(i));
|
|
}
|
|
|
|
return GetContext(aParentContext, ruleWalker.CurrentNode(), nullptr,
|
|
nullptr, nsCSSPseudoElements::ePseudo_NotPseudoElement,
|
|
nullptr, eNoFlags);
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ResolveStyleForRules(nsStyleContext* aParentContext,
|
|
nsStyleContext* aOldStyle,
|
|
const nsTArray<RuleAndLevel>& aRules)
|
|
{
|
|
nsRuleWalker ruleWalker(mRuleTree);
|
|
for (int32_t i = aRules.Length() - 1; i >= 0; --i) {
|
|
ruleWalker.SetLevel(aRules[i].mLevel, false, false);
|
|
ruleWalker.ForwardOnPossiblyCSSRule(aRules[i].mRule);
|
|
}
|
|
|
|
uint32_t flags = eNoFlags;
|
|
if (aOldStyle->IsLinkContext()) {
|
|
flags |= eIsLink;
|
|
}
|
|
if (aOldStyle->RelevantLinkVisited()) {
|
|
flags |= eIsVisitedLink;
|
|
}
|
|
|
|
return GetContext(aParentContext, ruleWalker.CurrentNode(), nullptr,
|
|
nullptr, nsCSSPseudoElements::ePseudo_NotPseudoElement,
|
|
nullptr, flags);
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ResolveStyleByAddingRules(nsStyleContext* aBaseContext,
|
|
const nsCOMArray<nsIStyleRule> &aRules)
|
|
{
|
|
NS_ENSURE_FALSE(mInShutdown, nullptr);
|
|
|
|
nsRuleWalker ruleWalker(mRuleTree);
|
|
ruleWalker.SetCurrentNode(aBaseContext->RuleNode());
|
|
// FIXME: Perhaps this should be passed in, but it probably doesn't
|
|
// matter.
|
|
ruleWalker.SetLevel(eDocSheet, false, false);
|
|
for (int32_t i = 0; i < aRules.Count(); i++) {
|
|
ruleWalker.ForwardOnPossiblyCSSRule(aRules.ObjectAt(i));
|
|
}
|
|
|
|
nsRuleNode *ruleNode = ruleWalker.CurrentNode();
|
|
nsRuleNode *visitedRuleNode = nullptr;
|
|
|
|
if (aBaseContext->GetStyleIfVisited()) {
|
|
ruleWalker.SetCurrentNode(aBaseContext->GetStyleIfVisited()->RuleNode());
|
|
for (int32_t i = 0; i < aRules.Count(); i++) {
|
|
ruleWalker.ForwardOnPossiblyCSSRule(aRules.ObjectAt(i));
|
|
}
|
|
visitedRuleNode = ruleWalker.CurrentNode();
|
|
}
|
|
|
|
uint32_t flags = eNoFlags;
|
|
if (aBaseContext->IsLinkContext()) {
|
|
flags |= eIsLink;
|
|
}
|
|
if (aBaseContext->RelevantLinkVisited()) {
|
|
flags |= eIsVisitedLink;
|
|
}
|
|
return GetContext(aBaseContext->GetParent(), ruleNode, visitedRuleNode,
|
|
aBaseContext->GetPseudo(),
|
|
aBaseContext->GetPseudoType(),
|
|
nullptr, flags);
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ResolveStyleForNonElement(nsStyleContext* aParentContext)
|
|
{
|
|
return GetContext(aParentContext, mRuleTree, nullptr,
|
|
nsCSSAnonBoxes::mozNonElement,
|
|
nsCSSPseudoElements::ePseudo_AnonBox, nullptr,
|
|
eNoFlags);
|
|
}
|
|
|
|
void
|
|
nsStyleSet::WalkRestrictionRule(nsCSSPseudoElements::Type aPseudoType,
|
|
nsRuleWalker* aRuleWalker)
|
|
{
|
|
// This needs to match GetPseudoRestriction in nsRuleNode.cpp.
|
|
aRuleWalker->SetLevel(eAgentSheet, false, false);
|
|
if (aPseudoType == nsCSSPseudoElements::ePseudo_firstLetter)
|
|
aRuleWalker->Forward(mFirstLetterRule);
|
|
else if (aPseudoType == nsCSSPseudoElements::ePseudo_firstLine)
|
|
aRuleWalker->Forward(mFirstLineRule);
|
|
else if (aPseudoType == nsCSSPseudoElements::ePseudo_mozPlaceholder)
|
|
aRuleWalker->Forward(mPlaceholderRule);
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ResolvePseudoElementStyle(Element* aParentElement,
|
|
nsCSSPseudoElements::Type aType,
|
|
nsStyleContext* aParentContext)
|
|
{
|
|
NS_ENSURE_FALSE(mInShutdown, nullptr);
|
|
|
|
NS_ASSERTION(aType < nsCSSPseudoElements::ePseudo_PseudoElementCount,
|
|
"must have pseudo element type");
|
|
NS_ASSERTION(aParentElement, "Must have parent element");
|
|
|
|
nsRuleWalker ruleWalker(mRuleTree);
|
|
TreeMatchContext treeContext(true, nsRuleWalker::eRelevantLinkUnvisited,
|
|
aParentElement->OwnerDoc());
|
|
PseudoElementRuleProcessorData data(PresContext(), aParentElement,
|
|
&ruleWalker, aType, treeContext);
|
|
WalkRestrictionRule(aType, &ruleWalker);
|
|
FileRules(EnumRulesMatching<PseudoElementRuleProcessorData>, &data,
|
|
aParentElement, &ruleWalker);
|
|
|
|
nsRuleNode *ruleNode = ruleWalker.CurrentNode();
|
|
nsRuleNode *visitedRuleNode = nullptr;
|
|
|
|
if (treeContext.HaveRelevantLink()) {
|
|
treeContext.ResetForVisitedMatching();
|
|
ruleWalker.Reset();
|
|
WalkRestrictionRule(aType, &ruleWalker);
|
|
FileRules(EnumRulesMatching<PseudoElementRuleProcessorData>, &data,
|
|
aParentElement, &ruleWalker);
|
|
visitedRuleNode = ruleWalker.CurrentNode();
|
|
}
|
|
|
|
// For pseudos, |data.IsLink()| being true means that
|
|
// our parent node is a link.
|
|
uint32_t flags = eNoFlags;
|
|
if (aType == nsCSSPseudoElements::ePseudo_before ||
|
|
aType == nsCSSPseudoElements::ePseudo_after) {
|
|
flags |= eDoAnimation;
|
|
}
|
|
|
|
return GetContext(aParentContext, ruleNode, visitedRuleNode,
|
|
nsCSSPseudoElements::GetPseudoAtom(aType), aType,
|
|
aParentElement, flags);
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ProbePseudoElementStyle(Element* aParentElement,
|
|
nsCSSPseudoElements::Type aType,
|
|
nsStyleContext* aParentContext)
|
|
{
|
|
TreeMatchContext treeContext(true, nsRuleWalker::eRelevantLinkUnvisited,
|
|
aParentElement->OwnerDoc());
|
|
return ProbePseudoElementStyle(aParentElement, aType, aParentContext,
|
|
treeContext);
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ProbePseudoElementStyle(Element* aParentElement,
|
|
nsCSSPseudoElements::Type aType,
|
|
nsStyleContext* aParentContext,
|
|
TreeMatchContext& aTreeMatchContext)
|
|
{
|
|
NS_ENSURE_FALSE(mInShutdown, nullptr);
|
|
|
|
NS_ASSERTION(aType < nsCSSPseudoElements::ePseudo_PseudoElementCount,
|
|
"must have pseudo element type");
|
|
NS_ASSERTION(aParentElement, "aParentElement must not be null");
|
|
|
|
nsIAtom* pseudoTag = nsCSSPseudoElements::GetPseudoAtom(aType);
|
|
nsRuleWalker ruleWalker(mRuleTree);
|
|
aTreeMatchContext.ResetForUnvisitedMatching();
|
|
PseudoElementRuleProcessorData data(PresContext(), aParentElement,
|
|
&ruleWalker, aType, aTreeMatchContext);
|
|
WalkRestrictionRule(aType, &ruleWalker);
|
|
// not the root if there was a restriction rule
|
|
nsRuleNode *adjustedRoot = ruleWalker.CurrentNode();
|
|
FileRules(EnumRulesMatching<PseudoElementRuleProcessorData>, &data,
|
|
aParentElement, &ruleWalker);
|
|
|
|
nsRuleNode *ruleNode = ruleWalker.CurrentNode();
|
|
if (ruleNode == adjustedRoot) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsRuleNode *visitedRuleNode = nullptr;
|
|
|
|
if (aTreeMatchContext.HaveRelevantLink()) {
|
|
aTreeMatchContext.ResetForVisitedMatching();
|
|
ruleWalker.Reset();
|
|
WalkRestrictionRule(aType, &ruleWalker);
|
|
FileRules(EnumRulesMatching<PseudoElementRuleProcessorData>, &data,
|
|
aParentElement, &ruleWalker);
|
|
visitedRuleNode = ruleWalker.CurrentNode();
|
|
}
|
|
|
|
// For pseudos, |data.IsLink()| being true means that
|
|
// our parent node is a link.
|
|
uint32_t flags = eNoFlags;
|
|
if (aType == nsCSSPseudoElements::ePseudo_before ||
|
|
aType == nsCSSPseudoElements::ePseudo_after) {
|
|
flags |= eDoAnimation;
|
|
}
|
|
|
|
nsRefPtr<nsStyleContext> result =
|
|
GetContext(aParentContext, ruleNode, visitedRuleNode,
|
|
pseudoTag, aType,
|
|
aParentElement, flags);
|
|
|
|
// For :before and :after pseudo-elements, having display: none or no
|
|
// 'content' property is equivalent to not having the pseudo-element
|
|
// at all.
|
|
if (result &&
|
|
(pseudoTag == nsCSSPseudoElements::before ||
|
|
pseudoTag == nsCSSPseudoElements::after)) {
|
|
const nsStyleDisplay *display = result->GetStyleDisplay();
|
|
const nsStyleContent *content = result->GetStyleContent();
|
|
// XXXldb What is contentCount for |content: ""|?
|
|
if (display->mDisplay == NS_STYLE_DISPLAY_NONE ||
|
|
content->ContentCount() == 0) {
|
|
result = nullptr;
|
|
}
|
|
}
|
|
|
|
return result.forget();
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ResolveAnonymousBoxStyle(nsIAtom* aPseudoTag,
|
|
nsStyleContext* aParentContext)
|
|
{
|
|
NS_ENSURE_FALSE(mInShutdown, nullptr);
|
|
|
|
#ifdef DEBUG
|
|
bool isAnonBox = nsCSSAnonBoxes::IsAnonBox(aPseudoTag)
|
|
#ifdef MOZ_XUL
|
|
&& !nsCSSAnonBoxes::IsTreePseudoElement(aPseudoTag)
|
|
#endif
|
|
;
|
|
NS_PRECONDITION(isAnonBox, "Unexpected pseudo");
|
|
#endif
|
|
|
|
nsRuleWalker ruleWalker(mRuleTree);
|
|
AnonBoxRuleProcessorData data(PresContext(), aPseudoTag, &ruleWalker);
|
|
FileRules(EnumRulesMatching<AnonBoxRuleProcessorData>, &data, nullptr,
|
|
&ruleWalker);
|
|
|
|
if (aPseudoTag == nsCSSAnonBoxes::pageContent) {
|
|
// Add any @page rules that are specified.
|
|
nsTArray<nsCSSPageRule*> rules;
|
|
nsTArray<css::ImportantRule*> importantRules;
|
|
nsPresContext* presContext = PresContext();
|
|
presContext->StyleSet()->AppendPageRules(presContext, rules);
|
|
for (uint32_t i = 0, i_end = rules.Length(); i != i_end; ++i) {
|
|
ruleWalker.Forward(rules[i]);
|
|
css::ImportantRule* importantRule = rules[i]->GetImportantRule();
|
|
if (importantRule) {
|
|
importantRules.AppendElement(importantRule);
|
|
}
|
|
}
|
|
for (uint32_t i = 0, i_end = importantRules.Length(); i != i_end; ++i) {
|
|
ruleWalker.Forward(importantRules[i]);
|
|
}
|
|
}
|
|
|
|
return GetContext(aParentContext, ruleWalker.CurrentNode(), nullptr,
|
|
aPseudoTag, nsCSSPseudoElements::ePseudo_AnonBox,
|
|
nullptr, eNoFlags);
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ResolveXULTreePseudoStyle(Element* aParentElement,
|
|
nsIAtom* aPseudoTag,
|
|
nsStyleContext* aParentContext,
|
|
nsICSSPseudoComparator* aComparator)
|
|
{
|
|
NS_ENSURE_FALSE(mInShutdown, nullptr);
|
|
|
|
NS_ASSERTION(aPseudoTag, "must have pseudo tag");
|
|
NS_ASSERTION(nsCSSAnonBoxes::IsTreePseudoElement(aPseudoTag),
|
|
"Unexpected pseudo");
|
|
|
|
nsRuleWalker ruleWalker(mRuleTree);
|
|
TreeMatchContext treeContext(true, nsRuleWalker::eRelevantLinkUnvisited,
|
|
aParentElement->OwnerDoc());
|
|
XULTreeRuleProcessorData data(PresContext(), aParentElement, &ruleWalker,
|
|
aPseudoTag, aComparator, treeContext);
|
|
FileRules(EnumRulesMatching<XULTreeRuleProcessorData>, &data, aParentElement,
|
|
&ruleWalker);
|
|
|
|
nsRuleNode *ruleNode = ruleWalker.CurrentNode();
|
|
nsRuleNode *visitedRuleNode = nullptr;
|
|
|
|
if (treeContext.HaveRelevantLink()) {
|
|
treeContext.ResetForVisitedMatching();
|
|
ruleWalker.Reset();
|
|
FileRules(EnumRulesMatching<XULTreeRuleProcessorData>, &data,
|
|
aParentElement, &ruleWalker);
|
|
visitedRuleNode = ruleWalker.CurrentNode();
|
|
}
|
|
|
|
return GetContext(aParentContext, ruleNode, visitedRuleNode,
|
|
// For pseudos, |data.IsLink()| being true means that
|
|
// our parent node is a link.
|
|
aPseudoTag, nsCSSPseudoElements::ePseudo_XULTree,
|
|
nullptr, eNoFlags);
|
|
}
|
|
#endif
|
|
|
|
bool
|
|
nsStyleSet::AppendFontFaceRules(nsPresContext* aPresContext,
|
|
nsTArray<nsFontFaceRuleContainer>& aArray)
|
|
{
|
|
NS_ENSURE_FALSE(mInShutdown, false);
|
|
|
|
for (uint32_t i = 0; i < ArrayLength(gCSSSheetTypes); ++i) {
|
|
if (gCSSSheetTypes[i] == eScopedDocSheet)
|
|
continue;
|
|
nsCSSRuleProcessor *ruleProc = static_cast<nsCSSRuleProcessor*>
|
|
(mRuleProcessors[gCSSSheetTypes[i]].get());
|
|
if (ruleProc && !ruleProc->AppendFontFaceRules(aPresContext, aArray))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsStyleSet::AppendKeyframesRules(nsPresContext* aPresContext,
|
|
nsTArray<nsCSSKeyframesRule*>& aArray)
|
|
{
|
|
NS_ENSURE_FALSE(mInShutdown, false);
|
|
|
|
for (uint32_t i = 0; i < ArrayLength(gCSSSheetTypes); ++i) {
|
|
if (gCSSSheetTypes[i] == eScopedDocSheet)
|
|
continue;
|
|
nsCSSRuleProcessor *ruleProc = static_cast<nsCSSRuleProcessor*>
|
|
(mRuleProcessors[gCSSSheetTypes[i]].get());
|
|
if (ruleProc && !ruleProc->AppendKeyframesRules(aPresContext, aArray))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
nsStyleSet::AppendPageRules(nsPresContext* aPresContext,
|
|
nsTArray<nsCSSPageRule*>& aArray)
|
|
{
|
|
NS_ENSURE_FALSE(mInShutdown, false);
|
|
|
|
for (uint32_t i = 0; i < NS_ARRAY_LENGTH(gCSSSheetTypes); ++i) {
|
|
if (gCSSSheetTypes[i] == eScopedDocSheet)
|
|
continue;
|
|
nsCSSRuleProcessor* ruleProc = static_cast<nsCSSRuleProcessor*>
|
|
(mRuleProcessors[gCSSSheetTypes[i]].get());
|
|
if (ruleProc && !ruleProc->AppendPageRules(aPresContext, aArray))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void
|
|
nsStyleSet::BeginShutdown(nsPresContext* aPresContext)
|
|
{
|
|
mInShutdown = 1;
|
|
mRoots.Clear(); // no longer valid, since we won't keep it up to date
|
|
}
|
|
|
|
void
|
|
nsStyleSet::Shutdown(nsPresContext* aPresContext)
|
|
{
|
|
mRuleTree->Destroy();
|
|
mRuleTree = nullptr;
|
|
|
|
// We can have old rule trees either because:
|
|
// (1) we failed the assertions in EndReconstruct, or
|
|
// (2) we're shutting down within a reconstruct (see bug 462392)
|
|
for (uint32_t i = mOldRuleTrees.Length(); i > 0; ) {
|
|
--i;
|
|
mOldRuleTrees[i]->Destroy();
|
|
}
|
|
mOldRuleTrees.Clear();
|
|
}
|
|
|
|
static const uint32_t kGCInterval = 300;
|
|
|
|
void
|
|
nsStyleSet::NotifyStyleContextDestroyed(nsPresContext* aPresContext,
|
|
nsStyleContext* aStyleContext)
|
|
{
|
|
if (mInShutdown)
|
|
return;
|
|
|
|
// Remove style contexts from mRoots even if mOldRuleTree is non-null. This
|
|
// could be a style context from the new ruletree!
|
|
if (!aStyleContext->GetParent()) {
|
|
mRoots.RemoveElement(aStyleContext);
|
|
}
|
|
|
|
if (mInReconstruct)
|
|
return;
|
|
|
|
if (mUnusedRuleNodeCount >= kGCInterval) {
|
|
GCRuleTrees();
|
|
}
|
|
}
|
|
|
|
void
|
|
nsStyleSet::GCRuleTrees()
|
|
{
|
|
mUnusedRuleNodeCount = 0;
|
|
|
|
// Mark the style context tree by marking all style contexts which
|
|
// have no parent, which will mark all descendants. This will reach
|
|
// style contexts in the undisplayed map and "additional style
|
|
// contexts" since they are descendants of the roots.
|
|
for (int32_t i = mRoots.Length() - 1; i >= 0; --i) {
|
|
mRoots[i]->Mark();
|
|
}
|
|
|
|
// Sweep the rule tree.
|
|
#ifdef DEBUG
|
|
bool deleted =
|
|
#endif
|
|
mRuleTree->Sweep();
|
|
NS_ASSERTION(!deleted, "Root node must not be gc'd");
|
|
|
|
// Sweep the old rule trees.
|
|
for (uint32_t i = mOldRuleTrees.Length(); i > 0; ) {
|
|
--i;
|
|
if (mOldRuleTrees[i]->Sweep()) {
|
|
// It was deleted, as it should be.
|
|
mOldRuleTrees.RemoveElementAt(i);
|
|
} else {
|
|
NS_NOTREACHED("old rule tree still referenced");
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline nsRuleNode*
|
|
SkipAnimationRules(nsRuleNode* aRuleNode, Element* aElement, bool isPseudo)
|
|
{
|
|
nsRuleNode* ruleNode = aRuleNode;
|
|
while (!ruleNode->IsRoot() &&
|
|
(ruleNode->GetLevel() == nsStyleSet::eTransitionSheet ||
|
|
ruleNode->GetLevel() == nsStyleSet::eAnimationSheet)) {
|
|
ruleNode = ruleNode->GetParent();
|
|
}
|
|
if (ruleNode != aRuleNode) {
|
|
NS_ASSERTION(aElement, "How can we have transition rules but no element?");
|
|
// Need to do an animation restyle, just like
|
|
// nsTransitionManager::WalkTransitionRule and
|
|
// nsAnimationManager::GetAnimationRule would.
|
|
nsRestyleHint hint = isPseudo ? eRestyle_Subtree : eRestyle_Self;
|
|
aRuleNode->GetPresContext()->PresShell()->RestyleForAnimation(aElement,
|
|
hint);
|
|
}
|
|
return ruleNode;
|
|
}
|
|
|
|
already_AddRefed<nsStyleContext>
|
|
nsStyleSet::ReparentStyleContext(nsStyleContext* aStyleContext,
|
|
nsStyleContext* aNewParentContext,
|
|
Element* aElement)
|
|
{
|
|
if (!aStyleContext) {
|
|
NS_NOTREACHED("must have style context");
|
|
return nullptr;
|
|
}
|
|
|
|
// This short-circuit is OK because we don't call TryStartingTransition
|
|
// during style reresolution if the style context pointer hasn't changed.
|
|
if (aStyleContext->GetParent() == aNewParentContext) {
|
|
aStyleContext->AddRef();
|
|
return aStyleContext;
|
|
}
|
|
|
|
nsIAtom* pseudoTag = aStyleContext->GetPseudo();
|
|
nsCSSPseudoElements::Type pseudoType = aStyleContext->GetPseudoType();
|
|
nsRuleNode* ruleNode = aStyleContext->RuleNode();
|
|
|
|
// Skip transition rules as needed just like
|
|
// nsTransitionManager::WalkTransitionRule would.
|
|
bool skipAnimationRules = PresContext()->IsProcessingRestyles() &&
|
|
!PresContext()->IsProcessingAnimationStyleChange();
|
|
if (skipAnimationRules) {
|
|
// Make sure that we're not using transition rules or animation rules for
|
|
// our new style context. If we need them, an animation restyle will
|
|
// provide.
|
|
ruleNode =
|
|
SkipAnimationRules(ruleNode, aElement,
|
|
pseudoType !=
|
|
nsCSSPseudoElements::ePseudo_NotPseudoElement);
|
|
}
|
|
|
|
nsRuleNode* visitedRuleNode = nullptr;
|
|
nsStyleContext* visitedContext = aStyleContext->GetStyleIfVisited();
|
|
// Reparenting a style context just changes where we inherit from,
|
|
// not what rules we match or what our DOM looks like. In
|
|
// particular, it doesn't change whether this is a style context for
|
|
// a link.
|
|
if (visitedContext) {
|
|
visitedRuleNode = visitedContext->RuleNode();
|
|
// Again, skip transition rules as needed
|
|
if (skipAnimationRules) {
|
|
// FIXME do something here for animations?
|
|
visitedRuleNode =
|
|
SkipAnimationRules(visitedRuleNode, aElement,
|
|
pseudoType !=
|
|
nsCSSPseudoElements::ePseudo_NotPseudoElement);
|
|
}
|
|
}
|
|
|
|
uint32_t flags = eNoFlags;
|
|
if (aStyleContext->IsLinkContext()) {
|
|
flags |= eIsLink;
|
|
}
|
|
|
|
// If we're a style context for a link, then we already know whether
|
|
// our relevant link is visited, since that does not depend on our
|
|
// parent. Otherwise, we need to match aNewParentContext.
|
|
bool relevantLinkVisited = aStyleContext->IsLinkContext() ?
|
|
aStyleContext->RelevantLinkVisited() :
|
|
aNewParentContext->RelevantLinkVisited();
|
|
|
|
if (relevantLinkVisited) {
|
|
flags |= eIsVisitedLink;
|
|
}
|
|
|
|
if (pseudoType == nsCSSPseudoElements::ePseudo_NotPseudoElement ||
|
|
pseudoType == nsCSSPseudoElements::ePseudo_before ||
|
|
pseudoType == nsCSSPseudoElements::ePseudo_after) {
|
|
flags |= eDoAnimation;
|
|
}
|
|
|
|
return GetContext(aNewParentContext, ruleNode, visitedRuleNode,
|
|
pseudoTag, pseudoType,
|
|
aElement, flags);
|
|
}
|
|
|
|
struct StatefulData : public StateRuleProcessorData {
|
|
StatefulData(nsPresContext* aPresContext, Element* aElement,
|
|
nsEventStates aStateMask, TreeMatchContext& aTreeMatchContext)
|
|
: StateRuleProcessorData(aPresContext, aElement, aStateMask,
|
|
aTreeMatchContext),
|
|
mHint(nsRestyleHint(0))
|
|
{}
|
|
nsRestyleHint mHint;
|
|
};
|
|
|
|
static bool SheetHasDocumentStateStyle(nsIStyleRuleProcessor* aProcessor,
|
|
void *aData)
|
|
{
|
|
StatefulData* data = (StatefulData*)aData;
|
|
if (aProcessor->HasDocumentStateDependentStyle(data)) {
|
|
data->mHint = eRestyle_Self;
|
|
return false; // don't continue
|
|
}
|
|
return true; // continue
|
|
}
|
|
|
|
// Test if style is dependent on a document state.
|
|
bool
|
|
nsStyleSet::HasDocumentStateDependentStyle(nsPresContext* aPresContext,
|
|
nsIContent* aContent,
|
|
nsEventStates aStateMask)
|
|
{
|
|
if (!aContent || !aContent->IsElement())
|
|
return false;
|
|
|
|
TreeMatchContext treeContext(false, nsRuleWalker::eLinksVisitedOrUnvisited,
|
|
aContent->OwnerDoc());
|
|
StatefulData data(aPresContext, aContent->AsElement(), aStateMask,
|
|
treeContext);
|
|
WalkRuleProcessors(SheetHasDocumentStateStyle, &data, true);
|
|
return data.mHint != 0;
|
|
}
|
|
|
|
static bool SheetHasStatefulStyle(nsIStyleRuleProcessor* aProcessor,
|
|
void *aData)
|
|
{
|
|
StatefulData* data = (StatefulData*)aData;
|
|
nsRestyleHint hint = aProcessor->HasStateDependentStyle(data);
|
|
data->mHint = nsRestyleHint(data->mHint | hint);
|
|
return true; // continue
|
|
}
|
|
|
|
// Test if style is dependent on content state
|
|
nsRestyleHint
|
|
nsStyleSet::HasStateDependentStyle(nsPresContext* aPresContext,
|
|
Element* aElement,
|
|
nsEventStates aStateMask)
|
|
{
|
|
TreeMatchContext treeContext(false, nsRuleWalker::eLinksVisitedOrUnvisited,
|
|
aElement->OwnerDoc());
|
|
StatefulData data(aPresContext, aElement, aStateMask, treeContext);
|
|
WalkRuleProcessors(SheetHasStatefulStyle, &data, false);
|
|
return data.mHint;
|
|
}
|
|
|
|
struct AttributeData : public AttributeRuleProcessorData {
|
|
AttributeData(nsPresContext* aPresContext,
|
|
Element* aElement, nsIAtom* aAttribute, int32_t aModType,
|
|
bool aAttrHasChanged, TreeMatchContext& aTreeMatchContext)
|
|
: AttributeRuleProcessorData(aPresContext, aElement, aAttribute, aModType,
|
|
aAttrHasChanged, aTreeMatchContext),
|
|
mHint(nsRestyleHint(0))
|
|
{}
|
|
nsRestyleHint mHint;
|
|
};
|
|
|
|
static bool
|
|
SheetHasAttributeStyle(nsIStyleRuleProcessor* aProcessor, void *aData)
|
|
{
|
|
AttributeData* data = (AttributeData*)aData;
|
|
nsRestyleHint hint = aProcessor->HasAttributeDependentStyle(data);
|
|
data->mHint = nsRestyleHint(data->mHint | hint);
|
|
return true; // continue
|
|
}
|
|
|
|
// Test if style is dependent on content state
|
|
nsRestyleHint
|
|
nsStyleSet::HasAttributeDependentStyle(nsPresContext* aPresContext,
|
|
Element* aElement,
|
|
nsIAtom* aAttribute,
|
|
int32_t aModType,
|
|
bool aAttrHasChanged)
|
|
{
|
|
TreeMatchContext treeContext(false, nsRuleWalker::eLinksVisitedOrUnvisited,
|
|
aElement->OwnerDoc());
|
|
AttributeData data(aPresContext, aElement, aAttribute,
|
|
aModType, aAttrHasChanged, treeContext);
|
|
WalkRuleProcessors(SheetHasAttributeStyle, &data, false);
|
|
return data.mHint;
|
|
}
|
|
|
|
bool
|
|
nsStyleSet::MediumFeaturesChanged(nsPresContext* aPresContext)
|
|
{
|
|
// We can't use WalkRuleProcessors without a content node.
|
|
bool stylesChanged = false;
|
|
for (uint32_t i = 0; i < ArrayLength(mRuleProcessors); ++i) {
|
|
nsIStyleRuleProcessor *processor = mRuleProcessors[i];
|
|
if (!processor) {
|
|
continue;
|
|
}
|
|
bool thisChanged = processor->MediumFeaturesChanged(aPresContext);
|
|
stylesChanged = stylesChanged || thisChanged;
|
|
}
|
|
for (uint32_t i = 0; i < mScopedDocSheetRuleProcessors.Length(); ++i) {
|
|
nsIStyleRuleProcessor *processor = mScopedDocSheetRuleProcessors[i];
|
|
bool thisChanged = processor->MediumFeaturesChanged(aPresContext);
|
|
stylesChanged = stylesChanged || thisChanged;
|
|
}
|
|
|
|
if (mBindingManager) {
|
|
bool thisChanged = false;
|
|
mBindingManager->MediumFeaturesChanged(aPresContext, &thisChanged);
|
|
stylesChanged = stylesChanged || thisChanged;
|
|
}
|
|
|
|
return stylesChanged;
|
|
}
|
|
|
|
nsCSSStyleSheet::EnsureUniqueInnerResult
|
|
nsStyleSet::EnsureUniqueInnerOnCSSSheets()
|
|
{
|
|
nsAutoTArray<nsCSSStyleSheet*, 32> queue;
|
|
for (uint32_t i = 0; i < ArrayLength(gCSSSheetTypes); ++i) {
|
|
nsCOMArray<nsIStyleSheet> &sheets = mSheets[gCSSSheetTypes[i]];
|
|
for (uint32_t j = 0, j_end = sheets.Count(); j < j_end; ++j) {
|
|
nsCSSStyleSheet *sheet = static_cast<nsCSSStyleSheet*>(sheets[j]);
|
|
if (!queue.AppendElement(sheet)) {
|
|
return nsCSSStyleSheet::eUniqueInner_CloneFailed;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (mBindingManager) {
|
|
mBindingManager->AppendAllSheets(queue);
|
|
}
|
|
|
|
nsCSSStyleSheet::EnsureUniqueInnerResult res =
|
|
nsCSSStyleSheet::eUniqueInner_AlreadyUnique;
|
|
while (!queue.IsEmpty()) {
|
|
uint32_t idx = queue.Length() - 1;
|
|
nsCSSStyleSheet *sheet = queue[idx];
|
|
queue.RemoveElementAt(idx);
|
|
|
|
nsCSSStyleSheet::EnsureUniqueInnerResult sheetRes =
|
|
sheet->EnsureUniqueInner();
|
|
if (sheetRes == nsCSSStyleSheet::eUniqueInner_CloneFailed) {
|
|
return sheetRes;
|
|
}
|
|
if (sheetRes == nsCSSStyleSheet::eUniqueInner_ClonedInner) {
|
|
res = sheetRes;
|
|
}
|
|
|
|
// Enqueue all the sheet's children.
|
|
if (!sheet->AppendAllChildSheets(queue)) {
|
|
return nsCSSStyleSheet::eUniqueInner_CloneFailed;
|
|
}
|
|
}
|
|
return res;
|
|
}
|
|
|
|
nsIStyleRule*
|
|
nsStyleSet::InitialStyleRule()
|
|
{
|
|
if (!mInitialStyleRule) {
|
|
mInitialStyleRule = new nsInitialStyleRule;
|
|
}
|
|
return mInitialStyleRule;
|
|
}
|